Merge pull request #2215 from dotty-staging/#2142

Fix #2142: Skolemize arguments of dependent methods if necessary

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/neg/i2142.scala b/tests/neg/i2142.scala
new file mode 100644
index 000000000..7aeef95f0
--- /dev/null
+++ b/tests/neg/i2142.scala
@@ -0,0 +1,28 @@
+object Foo {
+
+class A
+val a1 = new A()
+val a2 = new A()
+
+def f(x: A, y: x.type) = ()
+f(a1, a1)           // ok
+f(a1, a2)           // error
+f(new A(), new A()) // error
+f(new A(), a1)      // error
+
+def g(x: A)(y: x.type) = ()
+g(a1)(a1)           // ok
+g(a1)(a2)           // error
+g(new A())(new A()) // error
+g(new A())(a1)      // error
+
+val x0 = g(new A()) _
+x0 (new A())          // error
+
+class C[T]
+
+def h(x: A): C[x.type] = ???
+val x = h(a1)
+val y = h(new A())
+
+}